Group 1 (alkali Metals) - Lithium, Sodium And Potassium
Gbogbo ọrọ náà
Drop a tiny piece of potassium into water and it bursts into a lilac flame, skittering across the surface while hydrogen gas fizzes away. The alkali metals in Group 1 of the Periodic Table are among the most reactive elements, and their behaviour reveals powerful patterns about how the table is organised.
In this lesson you will compare the reactions of lithium, sodium, and potassium with water and air, explain the trends down the group, and learn to predict the properties of other Group 1 elements you have not seen.
Ebumnobi
- Understand how the similarities in the reactions of these elements with water provide evidence for their recognition as a family of elements
- Understand how the differences between the reactions of these elements with air and water provide evidence for the trend in reactivity in Group 1
- Use knowledge of trends in Group 1 to predict the properties of other alkali metals
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Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Group 1 (alkali Metals) - Lithium, Sodium And Potassium. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- How many electrons do Group 1 elements have in their outer shell? A) 1 B) 2 C) 7 D) 8 Answer: A
- Which Group 1 metal is the most reactive? A) Lithium B) Sodium C) Potassium D) All equally reactive Answer: C
- Group 1 metals are stored under oil to prevent: A) Melting B) Evaporating C) Reacting with air and water D) Dissolving Answer: C
- Going down Group 1, the melting point: A) Increases B) Decreases C) Stays the same D) Fluctuates Answer: B
- When sodium reacts with water, the products are: A) Sodium oxide and hydrogen B) Sodium hydroxide and oxygen C) Sodium hydroxide and hydrogen D) Sodium chloride and water Answer: C
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Periodicity
Classify elements
"Chemistry: Periodicity" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/chemistry/pages/18-1-periodicity. Access for free at https://openstax.org/books/chemistry/pages/1-introduction
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Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Group 1 (alkali Metals) - Lithium, Sodium And Potassium? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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